Radiator



a. E. ELLIQTT.'

RADIATOR.

.lszp. 1 ,420,91-7, Patented June 27, 1922;

, those skilled in the art and falling within PATENT- OFFICE.

GEORGE E. ELLIOTT, OF BALTIMORE, .IVI ARYLAND.

RADIATOR.

Specification of Letters Patent. Patented June 27, 1922,

Application filed November 20, 1920. Serial No. 425,417.

T 0 all whom it may concern:

I Be itv known thatLGnoncn E. ELLIOTT, a citizen of the United States, residing at Baltimore, in the county of Baltimore City and State of .Maryland, have invented certain new and useful Improvements in Radiators, of which the following is a specification, reference being had therein to the accompanying drawing;

This invention relates to improvements in radiators for motor vehicles and the like, and more especially has to do with an im proved core construction for such devices.

The object of the invention is to increase the air space between the tubes and the radiating surface thereof, to provide a more durable, light structure, and one that will permit of ready access to the abutting portions of the tubes for purpose of inspection and repair.

The invention, with other objects and advantages thereof and the particular construction and arrangement of parts comprising the same will be understood from the hereinafter contained detailed description when considered in connection with the accompanying drawings forming part hereof and illustrating one embodiment of the invention.

In the drawings Figure 1 is a front elevation of a radiator provided with a core construction in accordance with the present invention.

Figure 2 is a vertical section, on the line 22 of Figure 1.

Figure 3 is a horizontal section, on the line 3--3 of Figure 2.

Figure 4: is a top plan of a portion of the core.

While in the drawings a specific form of core is shown, by way of example, it will of course be understood that minor changes and variations in the particular construction illustrated, and the carrying out of the invention in other forms as will appeal to the scope of the appended claim, may be practiced without departing from the spirit of the invention.-

The particular construction illustrated in the drawings comprises a plurality of tubes A of general rectangular outline, relatively narrow and similarly provided with corrugations 7) extending transversely thereof, the tubes being closely associated side by side, as shown, With their corrugations disposed horizontally, and those of ad joining tubes opposite each other, passages being afforded forfilms or thin layers of liquid at the interior of the tubes, and passages for the circulation of air between the tubes." The corrugations 12, near their ends,--are provided with enlarged portions Z1, which areof greater depth thanand pro- I ject laterally beyond the intermediate central parts 6 thereof, said enlarged portions 6 of adjoining tubes abutting so that the intermediate central parts 5 of the corrugations are spaced, and in addition to the horizontal air passages 0, vertical air passages d, centrally of the ends of the corrugations and connecting the horizontal air passages 0, are provided. Adjoining the enlarged portions Z2, thecorrugations have end portions 6 that have a well defined taper from said enlarged portions 6 to the outer ends thereof.

In the particular construction of tube illustrated in the drawings, the corrugations of the tubes at alternate intervals extend in opposite directions, and each tube is made up of two thin sheets a, a of copper or other suitable material arranged face to face with the ends thereof brought together and suitably secured by welding, soldering, or the like. The sheets at their upper and lower marginal portions are secured together for a slight distance from the ends thereof leaving openings 6, e at the top and bottom of the tubes, the tubes having flanges f at their upper and lower marginal portions arranged in the overlapping relations shown and suitably secured together. The corrugations may be formed in various ways to provide the enlarged end portions 1) with the intermediate reduced portions 6 in the present instance the corrugations being flattened or pressed inwardly intermediate their ends for this purpose. G designates a casing of' conventional form to receive the core, the casing having the water headers g, g at the top and bottom thereof, with which the openings 6, e of the tubes communicate.

The special construction and arrangement of parts hereinbefore described affords a light, strong core. The spacing of the corrugations intermediate their ends increases the surface of the tubes exposed to the air, at the same time the abutting portions of the corrugations are so arranged material reduction in the extent of the portions of the corrugations in contact, result ing in a more durable structure. By the particular end formation with the decided taper starting from the enlarged end p01- tions of the corrugations, suflicient space is general curvilinear shape, relatively narrow, and similarly provided with corrugations extending transversely thereof, the tubes beingarranged side by side with the corruga- :tions of adjoining tubes opposite each other, a the corrugations of the tubes near their ends having enlarged portions of greater depth and projecting laterally beyond the central 20 part thereof, said enlarged end portions of the corrugations of adjoining tubes abutting and being secured together providing horizontal air passages between the tubes and also air spaces centrally of the ends of 25 the corrugations connectingthe horizontal air passages, and said water tubes being tapered from sald enlarged end portions of the corrugations outwardly to their outer ends.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

GEORGE E. ELLIOTT. \Vitnesses ELLA G. ELLIOTT, EDITH G. SoHooH. 

